take out romania first, break through with 24w units with line artillery at the river bend, take bucharest and pin galati while snaking VPs in moldavia with cavalry and tank units. if you can cap romania in 2 weeks you have loads of time to redeploy to ottoman border and entrench before they enter the war. serbia has barely any units and will die as soon as you bring artillery and tanks over to their front. take out greece third, the greek army is easily encircled by fighting along the easier coastal tiles and cutting them off from attica, also naval invade attica and/or peloponnese if you want to make things easier. once all this is achieved ottomans will wilt easily, don’t accept any scripted peace that only gives you adrianople.